On Wed, 20 Sep 2017 00:25:05 +0200, Pierre-Louis Bossart wrote: > > From: Sriram Periyasamy <sriramx.periyasamy@xxxxxxxxx> > > On recent Intel platforms (Haswell, Broadwell, Skylake, ApolloLake, > KabyLake, ...), the IEC Coding Type (ICT) bitfield in the Digital > Converter Control #3 needs to be set explicitly for HDMI/DisplayPort > High Bit Rate (HBR) audio playback to work. This was not required in > earlier platforms when HBR was first introduced. The ICT bits are > defined in Section 7.3.3.9 of the HDaudio 1.0a specification. > > Since the ICT bitfield was not specified for HDAudio 1.0 devices > (before 2009), we only program it on machines more recent than > Haswell. > > We tested that this fix is not needed on Baytrail-I (MinnowBoard > Turbot) and believe by extension it also does not apply to Braswell. > > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98797 > > Signed-off-by: Sriram Periyasamy <sriramx.periyasamy@xxxxxxxxx> > Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx> > Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@xxxxxxxxx> > --- > v2: move digi3 verb in Set section, only set ICT for haswell and newer Applied now with a slight fix (moving *_SET_* definition to the right place). thanks, Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
